mount and umount large capacity external USB HDD (fstab)

freebsd_user at guice.ath.cx freebsd_user at guice.ath.cx
Tue Feb 8 03:31:15 UTC 2011


... snip snip ....

>>
>> We will read that recipe.  Should anyone make additions to this thread
>> we
>> are all eyes_&_ears.
>>
>
> As was mentioned before, the limitationcomes from the defintion of the
> partition
> structures. Firstly the fdisk structure introduced with the IBM PC  (I
> think) has onlt room for
> 32 bits on its sector tables. secondly the bsd  'label' structure
> introduced
> in the 80s has a similar limitiation.
> The new structure to get around this is the GPT structure. you need to
> partition
> the drive with a gpt  capable partitioning tool..  gpart claims to do
> this (though
> I have never done it as I don't have a need (yet)). This limitiation
> will affect
> any system which you wil use to write those partition types and is
> indepenent
> of file system.  In addition Once you have made a partition big
> enough, you
> will need to populate it wirth a filesystem capable of representing
> data to that scale.
> UFS2 and ZFS are two candidates for this.
>
> If you take a modern Windows, it will probably partitionthe drive
> using a GPT table
> or some similar modern structure.(I don't have any modern windows
> system so I can't tell
> you exactly what they do, but they MUST have done the same thingif
> they didn't use GPT itself.)
> This is  a separate step from puting the file system on, though the
> windows tools may
> present it as a single step.
>
> I hope y'all will find this useful.
>

Thank you.  As Mr. Hesser pointed out earlier; it must be time for us to
learn gpart and friends :-)



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